mirror of https://gerrit.osmocom.org/gapk
73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/* Processing Queue Management */
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/*
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* This file is part of gapk (GSM Audio Pocket Knife).
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*
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* gapk is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gapk is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gapk. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GAPK_PROCQUEUE_H__
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#define __GAPK_PROCQUEUE_H__
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#include <stdint.h>
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#include <stdio.h> /* for FILE */
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struct pq;
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struct pq_item {
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/*! input frame size (in bytes). '0' in case of variable frames */
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int len_in;
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/*! output frame size (in bytes). '0' in case of variable frames */
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int len_out;
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/*! opaque state */
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void *state;
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/*! call-back for actual format conversion function
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* \param[in] state opaque state pointer
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* \param[out] out caller-allocated buffer for output data
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* \param[in] in input data
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* \param[in] in_len length of input data \a in
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* \returns number of output bytes written to \a out; negative on error */
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int (*proc)(void *state, uint8_t *out, const uint8_t *in, unsigned int in_len);
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void (*exit)(void *state);
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};
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/* Management */
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struct pq * pq_create(void);
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void pq_destroy(struct pq *pq);
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struct pq_item * pq_add_item(struct pq *pq);
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int pq_prepare(struct pq *pq);
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int pq_execute(struct pq *pq);
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/* File */
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int pq_queue_file_input(struct pq *pq, FILE *src, unsigned int block_len);
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int pq_queue_file_output(struct pq *pq, FILE *dst, unsigned int block_len);
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/* RTP */
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int pq_queue_rtp_input(struct pq *pq, int rtp_fd, unsigned int block_len);
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int pq_queue_rtp_output(struct pq *pq, int rtp_fd, unsigned int block_len);
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/* ALSA */
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int pq_queue_alsa_input(struct pq *pq, const char *hwdev, unsigned int blk_len);
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int pq_queue_alsa_output(struct pq *pq, const char *hwdev, unsigned int blk_len);
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/* Format */
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struct format_desc;
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int pq_queue_fmt_convert(struct pq *pq, const struct format_desc *fmt, int to_from_n);
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/* Codec */
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struct codec_desc;
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int pq_queue_codec(struct pq *pq, const struct codec_desc *codec, int encode);
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#endif /* __GAPK_PROCQUEUE_H__ */
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